My concern is the time it would take to grow these connections since I ain’t getting any younger! 

Now if you are seasoned and portfolio is mature and you are not as concern about maximizing income then I can see a migration to SFH might suit someone.  

You can learn these things over time.Take note, Due on sale clause isn't even one of the main concerns.

I think they contain solid information and will help lay a good foundation as a beginner (Haha, I'm completely new to real estate as well, btw)I'm also going to be reading the following books, and hopefully I can finish all by the end of this month:1) The ABCs of Property Management2) The Advanced Guide to Real Estate Investing3) Long-Distance Real Estate Investing How to Buy, Rehab, and Manage Out-of-State Rental Properties (this might be the most important one to me personally)4) The Book on Investing in Real Estate with No (and Low) Money DownIn addition to reading, I'm consuming crazy amounts of youtube videos, and I'recommend you do this as well.

The fact that you cannot find much information about their LLC is not a concern.  

That is my concern too.

My biggest concern is managing additional units and tenants.

The reasons cited for the market not following suit this time are concerns that increasing GDP, especially in Q4 of 2024, and policy changes such as tariffs could lead to a resurgence of inflation and thus a change in the Fed’s projections, with there being 150bps of variance between certain Fed members projections (Source).

So, landlords of exempt units don't even have to be concerned at all.   

Market Insights: Are there specific neighborhoods or property types in Philadelphia that I should target as a beginner?